*,
::before,
::after{
    /*选择所有的标签 */
    margin: 0;
    padding: 0;

    /*清除移动端默认的 点击高亮效果*/
    -webkit-tap-highlight-color: transparent;
    /*设置所有的都是以边框开始计算宽度  百分比*/
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}
body{
    margin: 0;
    padding: 0;
    font-size: 16px;
    font-family: PingFang-SC-Medium,"MicroSoft YaHei",sans-serif;/*设备默认字体*/
    color: #333;
}
html,body{
    width: 100%;
    height: 100%;
}
html{
    font-size: 100px;
}
 a{
     color: #333;
     text-decoration: none;
 }
 a:hover{
     text-decoration: none;
 }
 ul,ol{
     list-style: none;
 }
 ul li{
     float: left;
}
i,em{
    font-style: normal;
}
input{
    border: none;
    outline: none;
    /*清楚移动端默认的表单样式*/
    // -webkit-appearance: none;
}
button{
    border: none;
}
img{
    display: block;
    border: 0;
}
.f_left{
    float: left;
}
.f_right{
    float: right;
}
.clearfix::before,
.clearfix::after{
    content: "";
    height: 0;
    line-height: 0;
    display: block;
    visibility: hidden;
    clear: both;
}
